Finding the Fourth Proportional to 108,736.72, 163,005.36 and 42,159.76

Step by Step Solution

1. Step 1: Write the proportion equation
   108,736.72 : 163,005.36 = 42,159.76 : x
2. Step 2: Convert to fraction form
   108,736.72/163,005.36 = 42,159.76/x
3. Step 3: Cross multiply
   108,736.72x = 163,005.36 × 42,159.76
4. Step 4: Simplify right side
   108,736.72x = 6,872,266,856.31
5. Step 5: Solve for x
   x = 6,872,266,856.31/108,736.72
6. Step 6: Final answer
   x = 63,200.98